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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /var/www/web28/html/wp-content/plugins/matomo/app/core/Tracker/Db/Pdo/ |
| Current File : //var/www/web28/html/wp-content/plugins/matomo/app/core/Tracker/Db/Pdo/Mysql.php |
<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Tracker\Db\Pdo;
use Exception;
use PDO;
use PDOException;
use PDOStatement;
use Piwik\Tracker\Db;
use Piwik\Tracker\Db\DbException;
/**
* PDO MySQL wrapper
*
*/
class Mysql extends Db
{
/**
* @var PDO
*/
protected $connection = null;
/**
* @var string
*/
protected $dsn;
/**
* @var string
*/
private $username;
/**
* @var string
*/
private $password;
/**
* @var string|null
*/
protected $charset;
/**
* @var string|null
*/
private $collation;
protected $mysqlOptions = [];
protected $activeTransaction = false;
/**
* Builds the DB object
*
* @param array $dbInfo
* @param string $driverName
*/
public function __construct($dbInfo, $driverName = 'mysql')
{
if (isset($dbInfo['unix_socket']) && substr($dbInfo['unix_socket'], 0, 1) == '/') {
$this->dsn = $driverName . ':dbname=' . $dbInfo['dbname'] . ';unix_socket=' . $dbInfo['unix_socket'];
} elseif (!empty($dbInfo['port']) && substr($dbInfo['port'], 0, 1) == '/') {
$this->dsn = $driverName . ':dbname=' . $dbInfo['dbname'] . ';unix_socket=' . $dbInfo['port'];
} else {
$this->dsn = $driverName . ':dbname=' . $dbInfo['dbname'] . ';host=' . $dbInfo['host'] . ';port=' . $dbInfo['port'];
}
$this->username = $dbInfo['username'];
$this->password = $dbInfo['password'];
if (isset($dbInfo['charset'])) {
$this->charset = $dbInfo['charset'];
$this->dsn .= ';charset=' . $this->charset;
if (!empty($dbInfo['collation'])) {
$this->collation = $dbInfo['collation'];
}
}
if (isset($dbInfo['enable_ssl']) && $dbInfo['enable_ssl']) {
if (!empty($dbInfo['ssl_key'])) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_KEY] = $dbInfo['ssl_key'];
}
if (!empty($dbInfo['ssl_cert'])) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_CERT] = $dbInfo['ssl_cert'];
}
if (!empty($dbInfo['ssl_ca'])) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_CA] = $dbInfo['ssl_ca'];
}
if (!empty($dbInfo['ssl_ca_path'])) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_CAPATH] = $dbInfo['ssl_ca_path'];
}
if (!empty($dbInfo['ssl_cipher'])) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_CIPHER] = $dbInfo['ssl_cipher'];
}
if (!empty($dbInfo['ssl_no_verify']) && defined('PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT')) {
$this->mysqlOptions[PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT] = false;
}
}
}
public function __destruct()
{
$this->connection = null;
}
/**
* Connects to the DB
*
* @throws Exception if there was an error connecting the DB
*/
public function connect()
{
if (self::$profiling) {
$timer = $this->initProfiler();
}
// Make sure MySQL returns all matched rows on update queries including
// rows that actually didn't have to be updated because the values didn't
// change. This matches common behaviour among other database systems.
// See #6296 why this is important in tracker
$this->mysqlOptions[PDO::MYSQL_ATTR_FOUND_ROWS] = true;
$this->mysqlOptions[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
try {
$this->establishConnection();
} catch (Exception $e) {
if ($this->isMysqlServerHasGoneAwayError($e)) {
// mysql may return a MySQL server has gone away error when trying to establish the connection.
// in that case we want to retry establishing the connection once after a short sleep
$this->reconnect($e);
} else {
throw $e;
}
}
if (self::$profiling && isset($timer)) {
$this->recordQueryProfile('connect', $timer);
}
}
/**
* @internal tests only
* @param Exception $e
* @return bool
*/
public function isMysqlServerHasGoneAwayError(Exception $e)
{
return $this->isErrNo($e, \Piwik\Updater\Migration\Db::ERROR_CODE_MYSQL_SERVER_HAS_GONE_AWAY) || stripos($e->getMessage(), 'MySQL server has gone away') !== false;
}
/**
* Disconnects from the server
*/
public function disconnect()
{
$this->connection = null;
}
/**
* Returns an array containing all the rows of a query result, using optional bound parameters.
*
* @param string $query Query
* @param array $parameters Parameters to bind
* @return array|bool
* @see query()
* @throws Exception|DbException if an exception occurred
*/
public function fetchAll($query, $parameters = array())
{
try {
$sth = $this->query($query, $parameters);
if ($sth === false) {
return false;
}
return $sth->fetchAll(PDO::FETCH_ASSOC);
} catch (PDOException $e) {
throw new DbException("Error query: " . $e->getMessage());
}
}
/**
* Fetches the first column of all SQL result rows as an array.
*
* @param string $sql An SQL SELECT statement.
* @param mixed $bind Data to bind into SELECT placeholders.
* @throws \Piwik\Tracker\Db\DbException
* @return string
*/
public function fetchCol($sql, $bind = array())
{
try {
$sth = $this->query($sql, $bind);
if ($sth === false) {
return false;
}
$result = $sth->fetchAll(PDO::FETCH_COLUMN, 0);
return $result;
} catch (PDOException $e) {
throw new DbException("Error query: " . $e->getMessage());
}
}
/**
* Returns the first row of a query result, using optional bound parameters.
*
* @param string $query Query
* @param array $parameters Parameters to bind
* @return bool|mixed
* @see query()
* @throws Exception|DbException if an exception occurred
*/
public function fetch($query, $parameters = array())
{
try {
$sth = $this->query($query, $parameters);
if ($sth === false) {
return false;
}
return $sth->fetch(PDO::FETCH_ASSOC);
} catch (PDOException $e) {
throw new DbException("Error query: " . $e->getMessage());
}
}
/**
* Executes a query, using optional bound parameters.
*
* @param string $query Query
* @param array|string $parameters Parameters to bind array('idsite'=> 1)
* @return PDOStatement|bool PDOStatement or false if failed
* @throws DbException if an exception occurred
*/
public function query($query, $parameters = array())
{
try {
return $this->executeQuery($query, $parameters);
} catch (Exception $e) {
$isSelectQuery = stripos(trim($query), 'select ') === 0;
if ($isSelectQuery && !$this->activeTransaction && $this->isMysqlServerHasGoneAwayError($e)) {
// mysql may return a MySQL server has gone away error when trying to execute the query
// in that case we want to retry establishing the connection once after a short sleep
// we're only retrying SELECT queries to prevent updating or inserting records twice for some reason
// when transactions are used, then we just want it to fail as we'd be only writing partial data
$this->reconnect($e);
return $this->executeQuery($query, $parameters);
} else {
$message = $e->getMessage() . " In query: {$query} Parameters: " . var_export($parameters, true);
throw new DbException("Error query: " . $message, (int) $e->getCode());
}
}
}
/**
* @internal for tests only
* @param Exception $e
* @throws Exception
*/
public function reconnect(Exception $e)
{
$this->disconnect();
usleep(100 * 1000);
// wait for 100ms
try {
$this->establishConnection();
} catch (Exception $exceptionReconnect) {
// forward the original exception so we get a better stack trace of where this error happens
// and what happened originally
throw $e;
}
}
/**
* Executes a query, using optional bound parameters.
*
* @param string $query Query
* @param array|string $parameters Parameters to bind array('idsite'=> 1)
* @return PDOStatement|bool PDOStatement or false if failed
* @throws DbException if an exception occurred
*/
private function executeQuery($query, $parameters = array())
{
if (is_null($this->connection)) {
return false;
}
try {
if (self::$profiling) {
$timer = $this->initProfiler();
}
if (!is_array($parameters)) {
$parameters = array($parameters);
}
$sth = $this->connection->prepare($query);
$sth->execute($parameters);
if (self::$profiling && isset($timer)) {
$this->recordQueryProfile($query, $timer);
}
return $sth;
} catch (PDOException $e) {
$message = $e->getMessage() . " In query: {$query} Parameters: " . var_export($parameters, true);
throw new DbException("Error query: " . $message, (int) $e->getCode());
}
}
/**
* Returns the last inserted ID in the DB
* Wrapper of PDO::lastInsertId()
*
* @return int
*/
public function lastInsertId()
{
return $this->connection->lastInsertId();
}
/**
* Test error number
*
* @param Exception $e
* @param string $errno
* @return bool
*/
public function isErrNo($e, $errno)
{
return \Piwik\Db\Adapter\Pdo\Mysql::isPdoErrorNumber($e, $errno);
}
/**
* Return number of affected rows in last query
*
* @param mixed $queryResult Result from query()
* @return int
*/
public function rowCount($queryResult)
{
return $queryResult->rowCount();
}
/**
* Start Transaction
* @return string TransactionID
*/
public function beginTransaction()
{
if (!$this->activeTransaction === false) {
return;
}
try {
$success = $this->connection->beginTransaction();
} catch (Exception $e) {
if ($this->isMysqlServerHasGoneAwayError($e)) {
// mysql may return a MySQL server has gone away error when trying begin transaction, in that case we
// want to retry this once
$this->reconnect($e);
$success = $this->connection->beginTransaction();
} else {
throw $e;
}
}
if ($success) {
$this->activeTransaction = uniqid();
return $this->activeTransaction;
}
}
/**
* Commit Transaction
* @param $xid
* @throws DbException
* @internal param TransactionID $string from beginTransaction
*/
public function commit($xid)
{
if ($this->activeTransaction != $xid || $this->activeTransaction === false) {
return;
}
$this->activeTransaction = false;
if (!$this->connection->commit()) {
throw new DbException("Commit failed");
}
}
/**
* Rollback Transaction
* @param $xid
* @throws DbException
* @internal param TransactionID $string from beginTransaction
*/
public function rollBack($xid)
{
if ($this->activeTransaction != $xid || $this->activeTransaction === false) {
return;
}
$this->activeTransaction = false;
if (!$this->connection->rollBack()) {
throw new DbException("Rollback failed");
}
}
private function establishConnection() : void
{
$this->connection = @new PDO($this->dsn, $this->username, $this->password, $this->mysqlOptions);
// we may want to setAttribute(PDO::ATTR_TIMEOUT ) to a few seconds (default is 60) in case the DB is locked
// the matomo.php would stay waiting for the database... bad!
/*
* Lazy initialization via MYSQL_ATTR_INIT_COMMAND depends
* on mysqlnd support, PHP version, and OS.
* see ZF-7428 and http://bugs.php.net/bug.php?id=47224
*/
if (!empty($this->charset)) {
$sql = "SET NAMES '" . $this->charset . "'";
if (!empty($this->collation)) {
$sql .= " COLLATE '" . $this->collation . "'";
}
$this->connection->exec($sql);
}
}
}
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